求真务实 is ruining the reputation of XYS

送交者: squirrel 于 2008-01-09, 09:19:00:

稍具
误差理论知识的人均清楚：原始测量数据精确到5mL，测量结果的准确度不可能
达到比原始测量数据高近两个数量级的0.1mL/g。举个通俗的例子：如果两点间
的距离测量结果仅精确到km,无论时间的测量多么准确，最后计算出速度的准确
度是不可能达到1mm/s这样的量级的

The distance of Earth and Sun can be as accurate as km, then we can calculate the speed of a Space Ship as accurate as 1mm/s.